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Power Products (Electrical) > Transformers > 3-Phase Encapsulated Core Transformers (NEMA Rated)

NEMA 3-Phase Encapsulated Core Transformers

Encapsulated distribution transformers are filled with electrical grade silica and resin compounds that fully enclose the core and coil to seal out moisture. Available in a wide range of primary and secondary voltage configurations, Acme Electric 3-phase units with completely enclosed NEMA 3R housings are suitable for indoor/outdoor applications.

480 VAC Primary to 208Y/120 VAC Secondary

480 VAC Primary to 240/120 VAC (center tap) Secondary

600 VAC Primary to 480Y/277 VAC Secondary

600 VAC Primary to 208Y/120 VAC Secondary

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3-Phase Transformers - Encapsulated (NEMA Rated)

3-Phase Encapsulated Transformers Approvals

Dry-type General Purpose Encapsulated 3-Phase Distribution Transformers from Acme Electric

480 VAC Primary to 208Y/120 VAC Secondary
480 VAC Primary to 240/120 VAC (center tap) Secondary
600 VAC Primary to 480Y/277 VAC Secondary
600 VAC Primary to 208Y/120 VAC Secondary

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction, performs a voltage conversion and provides isolation of two systems. In an isolation transformer, the primary and secondary windings are physically separated from each other.

Acme Transformers

UL listed, CSA certified and UL type 3R enclosure
Meets or exceeds all listing criteria including NEMA, ANSI and OSHA standards

UL Class 180�C insulation system. 115�C rise
Extra large front access wiring compartment through 9kVA
Top access for easier installation and cooler case temperatures for 15kVA models
Completely enclosed � suitable for indoor/outdoor service
Excellent for dust or lint laden atmosphere
Encapsulated � silica and resin compound completely encloses the core and coil
High efficiency and excellent regulation
Sound levels below NEMA standards
Keyhole mounting slots permit installation of mounting bolts prior to hanging
Lifting ears for easy installation (up to 9kVA)
Wiring connections can be made outside of the wiring compartment due to the use of flexible leads
3-9 kVA have dual size knockouts in sides and bottom of wiring compartment
Termination � copper lead wire
Electrostatic shielding provided on all 60Hz isolation transformers

Features

Fully encapsulated core and coil
UL Type 3R enclosure
Grounding studs for use with non-metallic conduit
Copper lead wire for terminations
Electrostatic shield standard
Temperature range: -20�C [-4�F] to average ambient temperature 30�C [86�F], not to exceed 40�C [104�F] without derating the transformer.
Maximum temperature rise: 115�C [239�F]
BNFC (below normal full capacity) taps: 2
Taps 5% per step
Frequency: 60Hz